Maryland Metal Detecting Laws — Research Overview

An orientation to metal detecting and treasure hunting rules in Maryland, covering federal land, state land, private property, and who to verify with. This page is general research information, not legal advice. The state-level summaries below are our own category-level orientation and are not sourced to a Maryland statute, code section, or agency ruling. Rules change and differ by unit — verify with Maryland Department of Natural Resources before detecting.

Public and federal land in Maryland [UNSOURCED SUMMARY — confirm with the managing federal unit]: Maryland state parks prohibit detecting. Federal land is also governed nationally by the Archaeological Resources Protection Act (ARPA) and the Antiquities Act, which prohibit disturbing archaeological resources over 100 years old without a permit.

State land in Maryland [UNSOURCED SUMMARY — confirm with Maryland Department of Natural Resources]: National battlefields are strictly off-limits under ARPA.

Permits, permissions, and best practices in Maryland [UNSOURCED SUMMARY]: Beach detecting permitted on most county beaches with seasonal restrictions. Always carry written landowner consent for private ground and photograph the permission document.

Terrain and productive regions in Maryland: Coastal plain and rolling Piedmont. Top areas to research include Chesapeake Bay shoreline, Antietam region (private), Annapolis colonial waterfront.

Documented cases relevant to legal research in Maryland: British paymaster losses (1814); Antietam recovery (regulated); Chesapeake colonial cache rumors — legal status of any recovered items depends on land ownership at the moment of discovery.

Federal rules that apply in Maryland regardless of state law: ARPA (16 U.S.C. 470aa-470mm) protects archaeological resources 100 years or older on federal and Native American land; NAGPRA (25 U.S.C. ch. 32) governs Native American remains and cultural items; and the National Park Service prohibits metal detector use in park areas under 36 C.F.R. 2.1. Treasure trove and lost-property doctrine are set by state law and are not summarized here.

Verify with the governing agency in Maryland: Maryland Department of Natural Resources (https://dnr.maryland.gov/). Archaeological designations and permitting: the Maryland State Historic Preservation Office, listed in the NCSHPO directory at https://ncshpo.org/. Federal land: Bureau of Land Management, National Park Service, and USDA Forest Service.